I have dropped below the link for download of software for marine and cargo surveyorreferences.

1. Convert For Windows by Josh Madison (freeware)Convert is a free and easy to use unit conversion program that will convert the most popular units of distance, temperature, volume, time, speed, mass, power, density, pressure, energy and many others, including the ability to create custom conversions.Download available at http://jfmstatic.net/convert.zip